Re: [Freedos-devel] C Compiler Benchmark

Wed, 22 Jul 2026 11:58:35 -0700 


> Am 21.07.2026 um 19:47 schrieb Jim Hall via Freedos-devel 
> <[email protected]>:
> 
> There's also the RUNTIME tool, included in FreeDOS in the
> "Development" package group. 

Thanks, I did some more benchmarks (this time in 86box) and used RUNTIME:

8088 @ 4.7 MHz:
  IA16-GCC: 01:19.04m
  Watcom: 01:53.59m
  Turbo C++: 02:01.66m

286 @ 6 MHz:
  IA16-GCC: 00:14.00m
  Watcom: 00:27.51m
  Turbo C++: 00:24.49m

386 @ 16 MHz:
  IA16-GCC: 00:05.00m
  Watcom: 00:11.15m
  Turbo C++: 00:10.00m

486DX @ 25 MHz:
  IA16-GCC: 00:01.43m
  Watcom: 00:03.95m
  Turbo C++: 00:02.36m

Watcom performs significantly worse than even Turbo C++ on 386 and 486. That is 
not something I expected.

Also: 286 and 386 are both ~4 times as fast per clock cycle than the 8088, and 
the 486 is even ~10 times as fast per clock cycle than the 8088, and >2 times 
than the 386.

Bernd




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